A typical serving of butternut squash (1 cup, cubes, 205 g) has about 82 calories. Per 100 g: 40 kcal, 0.9 g protein, 10.5 g carbs, 0.1 g fat. The same 100 g carries 3.2 g of fiber and 2 g of sugar. Most of the energy comes from carbohydrate.
| Serving | Weight | Calories |
|---|---|---|
| 1 cup, cubes | 205 g | 82 kcal |
| 100 g | 100 g | 40 kcal |
Sweet for a vegetable yet still light: a cup of baked cubes is about 82 calories. On the energy-density scale, 40 kcal per 100 g puts butternut squash at the very low end. Fiber is the standout at 3.2 g per 100 g, which slows a portion down more than the calorie count suggests.

A typical serving (1 cup, cubes, 205 g) has about 82 calories, and 100 g has 40 kcal. Calories scale with weight, so double the portion means double the number.
There are 0.9 g of protein in 100 g of butternut squash, which works out to about 1.8 g per serving (1 cup). Treat it as an energy source rather than a protein source.
There are 10.5 g of carbohydrate per 100 g of butternut squash, or about 22 g in 1 cup (205 g).
Every value on this page comes from USDA FoodData Central, entry 169296 (SR Legacy). Serving figures are converted from the per-100-g data, so rounding can shift a total by a calorie or two.
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Nutrition data: USDA FoodData Central, FDC ID 169296 (SR Legacy). Serving calories are computed from the per-100-g values.